1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #pragma weak getpagesizes = _getpagesizes 29 #pragma weak getpagesizes2 = _getpagesizes2 30 31 #include "synonyms.h" 32 #include <sys/types.h> 33 #include <unistd.h> 34 #include <sys/syscall.h> 35 36 /* 37 * mman.h contains "#pragma redefine_extname getpagesizes getpagesizes2". 38 * Applications that are still calling getpagesizes() instead of 39 * getpagesizes2() are 'legacy' applications that have not been recompiled 40 * since the #pragma redefine_extname change. 41 * 42 * Depending on the platform, 'legacy' applications may not be given the full 43 * set of supported page sizes to prevent them from inadvertantly using 'new' 44 * large pagesizes that might cause application failure or low system memory 45 * conditions. 46 * 47 * The first parameter to the SYS_getpagesizes syscall is effectively 48 * a 'legacy' boolean flag used as such in the kernel. 49 */ 50 int 51 getpagesizes(size_t pagesize[], int nelem) 52 { 53 return (syscall(SYS_getpagesizes, 1, pagesize, nelem)); 54 } 55 56 int 57 getpagesizes2(size_t pagesize[], int nelem) 58 { 59 return (syscall(SYS_getpagesizes, 0, pagesize, nelem)); 60 } 61